KR20160139206A - Paint composition for matt dry plating and painting method for using the same - Google Patents

Paint composition for matt dry plating and painting method for using the same Download PDF

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KR20160139206A
KR20160139206A KR1020150073690A KR20150073690A KR20160139206A KR 20160139206 A KR20160139206 A KR 20160139206A KR 1020150073690 A KR1020150073690 A KR 1020150073690A KR 20150073690 A KR20150073690 A KR 20150073690A KR 20160139206 A KR20160139206 A KR 20160139206A
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weight
parts
coating
coating composition
photocurable
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KR1020150073690A
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KR101739072B1 (en
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최호
이승구
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조광페인트주식회사
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paints Or Removers (AREA)

Abstract

The present invention relates to a coating composition for a matte dry coating and a coating method using the coating composition, and more particularly, to a coating composition for a matte-type dry plating coating which is provided in the form of a photocurable UV primer coating composition, a heat drying intermediate coating composition or a photocurable UV top coating composition Based on the compositions, the undercoating layer, the intermediate coating layer and the topcoat layer are formed to provide a surface with the required properties of automotive parts.
According to the present invention, it is possible to form a coating film layer having appropriate thickness and satisfactory required properties so as to sufficiently cope with and protect the surface of automobile interior and exterior parts which are the basis for the external environment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition for a matte dry coating and a coating method using the coating composition.

The present invention relates to a coating composition for a matte dry plating coating and a coating method using the same.

The finishing treatment of various kinds of equipment including automobile interior and exterior parts based on a plastic material satisfies required properties such as required texture and gloss by performing coating so that a coating layer is formed on the surface of a subject to be a base.

In general, the coating method performed for the finishing treatment of such parts is generally performed through a wet plating process. However, in the case of such a wet plating process, there are problems that various harmful substances corresponding to environmentally controlled materials are generated. There is an increasing number of cases in which coatings are replaced with coatings.

In connection with this, prior literature on the prior art provided for carrying out multilayer coating on the surface of interior and exterior parts of automobiles using the dry plating method is disclosed in Korean Patent Laid-Open No. 10-2012-0126847 entitled "Multilayer coating for dry- Method and a plastic material containing the same "(hereinafter referred to as" prior art ").

However, in the case of the coating film formed through the conventional dry plating method including the conventional technique, the required properties such as the thickness to be formed and the abrasion resistance, moisture resistance and scratch resistance required for the coating film can not be satisfied, Layer is formed on the surface of the object to be a base.

It is an object of the present invention to minimize the emission of harmful substances and to satisfy the physical properties required on the surface of a component to be protected, And to provide a technique capable of forming a corresponding coat layer.

In order to achieve the above object, the coating composition for a matte dry plating coating of the present invention may be provided in the form of a photocurable UV coating composition, a heat drying coating composition, or a photocurable UV coating composition.

First, a photocurable UV undercoating composition for a matte dry coating is prepared by mixing 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent.

Next, the thermally drying intermediate coating composition for a matte dry coating is composed of a base and a curing agent, wherein the base comprises 15 to 25 parts by weight of a second acrylic polyol relative to 40 to 60 parts by weight of the first acrylic polyol; 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent, wherein the curing agent comprises an epoxy silane, an isocyanate curing agent and an organic solvent, wherein the first acrylic polyol has a higher molecular weight and a lower glass transition temperature (Tg ).

The thermally drying intermediate coating composition for a matte dry plating coating comprises 10 to 15 parts by weight of the curing agent based on 100 parts by weight of the subject, wherein the curing agent comprises 30 to 50 parts by weight of the epoxy silane; 30 to 50 parts by weight of the isocyanate curing agent; And 10 to 20 parts by weight of the organic solvent.

The first acrylic polyol has a molecular weight of 7,500 to 8,500 and a glass transition temperature (Tg) of 30 to 40 DEG C, and the second acrylic polyol has a molecular weight of 4,500 to 5,500 and a glass transition temperature (Tg ).

And a photocurable UV topcoat composition for a matte dry coating, comprising 1 to 10 parts by weight of a 9-functional urethane acrylate oligomer; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent.

In order to achieve the above object, the coating method using the coating composition for a matte dry coating of the present invention comprises preparing a photocurable UV primer coating composition, a heat drying intermediate coating composition and a photocurable UV primer coating composition, A step A for preparing a coating composition for coating; A step B of applying the photocurable UV primer coating composition prepared in the step A to the surface of the base layer to form a primer layer; Performing a dry plating process on the surface of the undercoat layer formed through the step B by vacuum deposition of metal to form a dry plating layer; Drying the thermally drying intermediate coating composition prepared in step A on the surface of the dry plating layer formed in step C to form a middle layer; And Step E in which the top layer is formed by applying the photocurable UV top coating composition prepared through Step A onto the surface of the intermediate layer formed through Step D).

Here, the photocurable UV undercoating composition prepared through the step A may be prepared by mixing 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent.

The thermally drying type intermediate coating composition prepared by the step A may further comprise 10 to 15 parts by weight of a curing agent based on 100 parts by weight of the subject, wherein the subject comprises 40 to 60 parts by weight of the first acrylic polyol, 15 to 25 parts by weight of a polyol; 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent, wherein the curing agent comprises 30 to 50 parts by weight of an epoxy silane; 30 to 50 parts by weight of an isocyanate curing agent; And 10 to 20 parts by weight of an organic solvent.

Wherein the first acrylic polyol has a molecular weight of 7,500 to 8,500 and a glass transition temperature (Tg) of 30 to 40 DEG C, the second acrylic polyol has a molecular weight of 4,500 to 5,500 and a glass transition temperature (Tg ).

In addition, the photocurable UV top coating composition prepared through the step A may contain 1 to 10 parts by weight of a 9-functional urethane acrylate oligomer; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent.

The present invention has the following effects.

First, the surface treatment of automobile interior and exterior parts based on plastic materials can be carried out through the dry plating method which does not discharge harmful substances.

Second, it is possible to form a coating layer having appropriate thickness and satisfactory required properties so as to sufficiently cope with and protect the surface of automobile interior and exterior parts which are the basis for the external environment.

FIG. 1 is a flowchart showing a coating method using the coating composition for a non-light-sensitive dry plating coating of the present invention.
2 shows the shape of the scratches used in the scratch resistance test of the coating layer formed through the coating method using the coating composition for a dry-laid dry plating coating of the present invention.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of brevity.

1. Description of coating compositions for matte dry coatings

The coating composition for matte dry coating of the present invention comprises a photocurable UV primer coating composition, a heat-drying primer coating composition and a photocurable UV primer coating composition, wherein each primer, intermediate primer, And it plays a role corresponding to the characteristics of each layer formed by having the content.

(1) Photocurable UV undercoating composition for matte dry coating

The photocurable UV undercoating composition for matte dry coating of the present invention is a coating composition for forming a undercoating layer which can provide excellent adhesion to a base layer and a dry plating layer as a base, and is a plastic trifunctional urethane acrylate oligomer ; Bifunctional urethane acrylate oligomers; Trifunctional acrylate monomers; Bifunctional acrylate monomers; Photoinitiators; Leveling additives; Adhesion promoters; And an organic solvent.

First, the description of the trifunctional urethane acrylate oligomer and the bifunctional urethane acrylate oligomer will be given in order to minimize the strain with the hard dry plated layer and increase the adhesion of the undercoating layer The multifunctional aliphatic urethane acrylates that can be used in the present invention as an element for the present invention are Ebecryl-284, Ebecryl-9260, Ebecryl-1290, Ebecryl-80, Ebecryl- 830, Ebecryl- 9970 from ENTIS, CN929, CN934, MIRAMER SC2010, MIRAMER SC2020, MIRAMER SC2021, MIRAMER SC2054, MIRAMER SC2100, and the like, but the present invention is not limited thereto. Examples of the MIRAMER PU210 include MIRAMER PU210, MIRAMER PU610, MIRAMER SC2010, MIRAMER SC2011, MIRAMER SC2020, MIRAMER SC2021, MIRAMER SC2054 and MIRAMER SC2100. A polyfunctional aliphatic urethane acrylate having two or more acryl groups so as to improve the adhesion with the dry plating layer due to the low transition temperature It can be selected within the scope of site.

It is preferable that the trifunctional urethane acrylate oligomer is provided in an amount of 5 to 20 parts by weight. If the amount of the trifunctional urethane acrylate oligomer is less than 5 parts by weight, the hardness of the undercoating layer, If the amount is more than 10 parts by weight, there arises a problem that the adhesion and appearance of the vapor deposition become poor.

The bifunctional urethane acrylate oligomer is preferably provided in an amount of 5 to 20 parts by weight. If the bifunctional urethane acrylate oligomer is less than 5 parts by weight, adherence and impact resistance to the material are deteriorated. When the amount of the bifunctional urethane acrylate oligomer is more than 20 parts by weight The adhesion to the deposition and the appearance are poor, and the hardness and curability of the undercoating film deteriorate.

Next, the bifunctional acrylate monomer is an element for improving the adhesion between the undercoat layer and the material layer formed through the photocurable UV undercoat composition for dry coating of the present invention, If the amount of the bifunctional acrylate monomer is less than 10 parts by weight, adhesion to the material layer is deteriorated. If the amount of the bifunctional acrylate monomer is more than 20 parts by weight, whitening may occur in the undercoat layer, This results in a problem of poor quality.

Herein, the bifunctional acrylate monomer that can be used in the present invention is 1,3-butanediol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, diethylene glycol di Acrylate, neopentyl glycol diacrylate, hydroxypivalic acid ester neopentyl glycol diacrylate, tripropylene glycol diacrylate, and the like are preferably used, but the present invention is not limited thereto, and the adhesion between the material layer and the undercoat film And can be selected within the range of bifunctional acrylate monomers known to have two acrylic groups.

Also, the trifunctional acrylate monomer is an element for improving the curability of the coating film formed through the photocurable UV coating composition for matte dry coating of the present invention, and it is preferably 20 to 30 parts by weight If the amount of the trifunctional acrylate monomer is less than 20 parts by weight, the hardenability and the hardness of the undercoat film are lowered. If the amount of the trifunctional acrylate monomer is more than 30 parts by weight, the adhesion of the undercoating layer, to be.

The trifunctional acrylate monomer that can be used in the present invention is preferably trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and the like, but not limited thereto, Can improve the hardenability of the coating film and can be selected within the range of the known trifunctional acrylate monomers to have three acrylic groups.

The photoinitiator is preferably used in an amount of 1 to 5 parts by weight as an element for ultraviolet curing of the photocurable UV undercoating composition for matte dry coating of the present invention. If the amount of the photoinitiator is less than 1 part by weight, And when it exceeds 5 parts by weight, there arises a problem that the deposition adhesion becomes poor.

Herein, the photoinitiators that can be used in the present invention include 1-hydroxycyclohexyl phenyl ketone, 2,2-dimethoxy-2-phenyl-acetophenone, benzaldehyde, anthraquinone, 3-methylacetophenone, 4-dimethoxybenzophenone, benzoin propyl ether, benzoin ethyl ether, 1- (4-isopropyl-phenol) -2-hydroxy- 2,4,6-trimethylbenzoyl-diphenylphosphine, and the like.

Lucorine LR8728, Lucirine TPO (BASF), Micure HP-8, TPO, CP (Merck), and others such as Irgacure 184, 651, 500, 819, 907 and 1800 -4, and BK-6 (manufactured by Wis. Specialty Chemicals). However, the present invention is not limited thereto and may be selected within the range of known photoinitiators for ultraviolet curing purposes.

The leveling additive is preferably added in an amount of 0.1 to 1 part by weight as an element for improving smoothness and spraying workability in the undercoat formed through the photocurable UV undercoating composition for matte dry coating of the present invention, When the amount of the additive is less than 0.1 part by weight, the leveling and the base wetting are poor, and when the amount is more than 1 part by weight, the deposition adhesion becomes poor.

Here, the leveling additive that can be used in the present invention is preferably made of polyester modified polysiloxanes, but is not limited thereto and may be selected within the range of known leveling additives.

The adhesion promoting agent is preferably added in an amount of 1 to 5 parts by weight to improve the moisture resistance and the heat and cold cyclability of the undercoat formed through the photocurable UV undercoat composition for dry coating of the present invention, If the amount of the enhancer is less than 1 part by weight, the adhesion between the material layer and the undercoating film is deteriorated. If the amount is more than 5 parts by weight, the appearance becomes poor.

Here, the adhesion promoting agent that can be used in the present invention is preferably prepared by a vinyl resin, but it is not limited thereto and can be selected within the range of known adhesion promoting agent.

The organic solvent is preferably added in an amount of 30 to 50 parts by weight as an element for maintaining the thickness of the undercoat formed through the photocurable UV undercoating composition for dry coating of the present invention and improving the workability of painting. If the amount of the organic solvent is less than 30 parts by weight, the paint workability is deteriorated and the appearance becomes poor. If the amount exceeds 50 parts by weight, sufficient coating film formation may not be achieved.

Here, the organic solvent that can be used in the present invention may be an organic solvent such as acetate, ketone, alcohol, ester, aromatic or aliphatic base, But it is not limited thereto and may be selected within the range of known organic solvents.

To be more specific, organic solvents such as aromatic benzene, toluene, xylene, isobutyl alcohol, n-butyl alcohol (n- butyl alcohol, isopropyl alcohol, ethyl alcohol, methyl alcohol, ketone-based acetone, methyl ethyl ketone, methyl isobutyl ketone Methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl acetate, butyl acetate, ester cell ethyl cellosolve, butyl cellosolve, Butyl cellosolve, Cellosolve acetate, Aliphaticbased Solvesso # 100, Solvesso # 150 and the like can be used.

That is, as described above, 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent. The photocurable UV undercoat composition for dry coating of the present invention has high adhesion to a base layer (in particular, a plastic base layer) It is possible to form a lower coating film which can provide a high deposition adhesion to the dry plating layer formed by the post-dry plating process.

(2) Heat drying type intermediate coating composition for matte dry coating

The heat drying type intermediate coating composition for a matte dry coating of the present invention is a coating composition for forming a mid coat film having excellent adhesion and protection against a dry plating layer and capable of relaying adhesion between a dry coating layer and a top coat layer, It includes a subject and a hardener.

Wherein the subject is a first acrylic polyol; A second acrylic polyol; Thermoplastic acrylic resins; Adhesion promoters; Curing accelerator; Leveling additives; UV stabilizers; And an organic solvent, wherein the curing agent is an epoxy silane; Isocyanate curing agents; And an organic solvent.

Acrylic polyol is a cationic thermosetting acrylic polyol containing a tertiary amine group. It is used as an adhesion promoting agent for a metal film of a middle layer formed through a heat drying type intermediate coating composition for a matte dry coating. It is an element that exerts excellent physical properties such as weatherability, moisture resistance, dryness, etc., and is classified into a first acrylic polyol and a second acrylic polyol and is included on the pre-intermediate coating.

For reference, the range of the numerical value for the content (parts by weight) of each composition contained in the subject to be described below means the ratio among the respective compositions constituting the subject.

Here, the first acrylic polyol is an acrylic polyol resin having a solid content of 46 to 56%, a hydroxyl value (-OH Value) of 40 to 60, a molecular weight of 7,500 to 8,500 and a glass transition temperature (Tg) of 30 to 40 ° C , And the second acrylic polyol is an acrylic polyol having a solid content of 50 to 60%, a hydroxyl value (-OH Value) of 30 to 50, a molecular weight of 4,500 to 5,500 and a glass transition temperature (Tg) of 45 to 55 ° C Means a polyol resin.

Here, the molecular weight means the weight average molecular weight more specifically, and the expression of the molecular weight to be continuously described below also means the weight average molecular weight.

If the amount of the first acrylic polyol is less than 40 parts by weight, adhesion of metal deposition, moisture resistance, and dryness are reduced. If the amount of the first acrylic polyol is more than 60 parts by weight, The sprayability is lowered, the smoothness of the intermediate coating film is lowered, and the impact resistance is lowered due to the hardness.

If the second acrylic polyol is less than 15 parts by weight, water resistance becomes poor. If the amount of the second acrylic polyol is more than 25 parts by weight, defective adherence of the coating due to shrinkage may occur This is because there is a problem.

The thermoplastic acrylic resin is an element for improving the physical properties of the coating film such as the anti-shrinkage property and drying property of the intermediate coating film formed through the heat drying type intermediate coating composition for the matte dry coating of the present invention, and it is prepared in 5 to 20 parts by weight If the amount of the thermoplastic acrylic resin is less than 5 parts by weight, adhesion of the metal deposition due to drying and shrinking becomes poor. When the amount of the thermoplastic acrylic resin is more than 20 parts by weight, problems such as water resistance and moisture resistance may occur.

Here, the thermoplastic acrylic resin has a solid content of 35 to 45%, a molecular weight of 60,000 to 70,000, and a glass transition temperature (Tg) of 45 to 55 ° C.

The adhesion promoter in the subject of the heat drying type intermediate coating composition for a matte dry coating is an element for improving the moisture resistance and the heat and cold cycling of the intermediate coating formed through the heat drying type intermediate coating composition for a matte dry coating of the present invention , And 1 to 5 parts by weight. If the amount of the adhesion promoting agent is less than 1 part by weight, the adhesion between the dry coating layer and the intermediate coating layer is deteriorated. If the adhesion promoting agent is more than 5 parts by weight, Because.

The adhesion promoter is preferably a polyester resin and has a solid content of 55 to 65%, a hydroxyl value of 30 to 40, a molecular weight of 2,500 to 3,500, a glass transition temperature (Tg) of 15 to 25 Lt; 0 > C.

The curing accelerator is preferably added in an amount of 0.01 to 0.1 part by weight to improve the dryness of the intermediate coating layer formed through the heat drying type intermediate coating composition for a matte dry coating of the present invention. , It can not function as a hardening accelerator. If it exceeds 0.1 part by weight, the working time is shortened and the workability is deteriorated.

Here, the curing accelerator that can be used in the present invention is preferably a curing accelerator such as dibutyltin dilaurate (DBTL) which is a metal catalyst. However, the curing accelerator is not limited to the range of known curing accelerators ≪ / RTI >

The in-subject leveling additive of the heat-drying type intermediate coating composition for a matte dry-type plating coating is an element for improving smoothness and spraying workability in the intermediate coating formed through the heat-drying type intermediate coating composition for a matte dry coating of the present invention , And 0.2 to 1 part by weight. If the leveling additive is less than 0.2 part by weight, the leveling and the surface wettability of the metal deposition become poor. If the amount of the leveling additive is more than 1 part by weight, adhesion between the dry coating layer and the intermediate coating layer and between the intermediate coating layer and the top coating layer This is because the problem of degrading the property occurs.

Here, the leveling additive that can be used in the present invention is preferably made of polyester modified polysiloxanes, but is not limited thereto and may be selected within the range of known leveling additives.

The UV stabilizer (UVA, HALS) in the subject of the heat-drying type intermediate coating composition for the matte dry coating is an element for improving the weatherability of the intermediate coating formed through the heat drying type intermediate coating composition for the matte dry coating of the present invention , And 1 to 5 parts by weight, respectively. This is because when the amount of the UV stabilizer is less than 1 part by weight, chromatic aberration occurs after the accelerated weathering test, and when it exceeds 5 parts by weight, yellowing of the intermediate coating film occurs.

Examples of the UV stabilizer that can be used in the present invention include hydroxyphenyl-benzotriazole, benzotriazine, and pentamethyl-4-piperidinyl-sebacate. Tinuvin 1130, 292, 99-2 manufactured by CIBA, Eversorb 80, 93 manufactured by Everlight group, etc. may be used, but it is not limited thereto and may be selected within the range of known UV stabilizers. have.

The organic solvent in the subject of the heat-drying type intermediate coating composition for a matte dry coating is used for maintaining the thickness of the intermediate coating formed through the heat-drying intermediate coating composition for matte dry coating of the present invention, If the amount of the organic solvent is less than 20 parts by weight, the coating workability is deteriorated and the appearance becomes poor. If the amount exceeds 30 parts by weight, the paint may flow down to the coating film, The problem of not being formed is caused.

Here, the organic solvent that can be used in the present invention may be an organic solvent such as acetate, ketone, alcohol, ester, aromatic or aliphatic base, But it is not limited thereto and may be selected within the range of known organic solvents.

Describing the curing agent, the curing agent containing the epoxy silane, the isocyanate curing agent and the organic solvent has an amount of 10 to 15 parts by weight based on 100 parts by weight of the subject, and if the amount of the curing agent is less than 10 parts by weight, Moisture resistance and metal deposition adhesion of the intermediate coating film formed through the heat drying type intermediate coating composition are poor. When the amount exceeds 15 parts by weight, the dry state of the intermediate coating film is poor and the impact resistance is lowered .

For reference, the range of the numerical value with respect to the content (parts by weight) of each composition contained in the curing agent to be described below means the ratio between the respective compositions constituting the curing agent.

 Epoxysilane is an element for improving adhesion of metal deposition by properly drying the intermediate coating through reaction with a cationic type thermosetting acrylic polyol containing tertiary amine group, and is preferably provided in an amount of 30 to 50 parts by weight, When the amount of the epoxy silane is less than 30 parts by weight, adhesion of metal deposition and moisture resistance are poor. When the amount of the epoxy silane is more than 50 parts by weight, impact resistance is deteriorated.

The isocyanate curing agent is an element for securing the physical properties of the intermediate coating film by causing a urethane reaction with the hydroxyl group of the cationic type thermosetting acrylic polyol containing a tertiary amine group and is preferably provided in an amount of 30 to 50 parts by weight, The adhesion between the dry coating layer and the intermediate coating film and between the intermediate coating film and the top coating film is deteriorated. If the amount exceeds 50 parts by weight, drying and moisture resistance of the intermediate coating film are poor.

Here, the isocyanate curing agent that can be used in the present invention is preferably provided as hexamethylene diisocyanate containing a polyisocyanate group, but it is not limited thereto, and it is preferable to select within the range of known curing agent containing isocyanate .

The organic solvent in the curing agent of the heat-drying type intermediate coating composition for the matte dry coating is used for maintaining the thickness of the intermediate coating formed through the heat drying type intermediate coating composition for matte dry coating of the present invention, When the amount of the organic solvent is less than 10 parts by weight, the coating workability is deteriorated and the appearance becomes poor. When the amount of the organic solvent is less than 20 parts by weight, the paint may flow down to the coating film, The problem of not being formed is caused.

Here, the organic solvent that can be used in the present invention may be an organic solvent such as acetate, ketone, alcohol, ester, aromatic or aliphatic base, But it is not limited thereto and may be selected within the range of known organic solvents.

That is, as described above, from 15 to 25 parts by weight of the second acrylic polyol relative to 40 to 60 parts by weight of the first acrylic polyol; 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent,

30 to 50 parts by weight of an epoxy silane; 30 to 50 parts by weight of an isocyanate curing agent; And 10 to 20 parts by weight of an organic solvent is provided in a ratio of 10 to 15 parts by weight of a curing agent based on 100 parts by weight of the base material. The heat-drying intermediate coating composition for a matte dry- It is possible to form an intermediate coating film which is fast, has excellent protection and adhesion to the dry plating layer and can serve as a relay between the dry plating layer and the top coat layer.

(3) Photocurable UV topcoat composition for matte dry coating

The photocurable UV top coating composition for matte dry coating of the present invention is excellent in protection against the external environment and can be applied as a coating layer through surface treatment of automobile parts to provide a coating composition for forming a top coat which can provide required physical and chemical properties A 9-functional urethane acrylate oligomer; Hexafunctional urethane acrylate oligomers; Bifunctional urethane acrylate oligomers; Monofunctional acrylate monomers; Trifunctional acrylate monomers; Photoinitiators; UV stabilizers; Leveling additives; Quencher; And an organic solvent.

Description will now be made of an aliphatic urethane acrylate oligomer, an aliphatic urethane acrylate oligomer, and a bifunctional urethane acrylate oligomer. The polyfunctional aliphatic urethane acrylate that can be used in the present invention as an element for achieving physical properties such as hardness, abrasion resistance, curability and adhesiveness required as a top coat located at the uppermost stage of the product is Ebecryl-284, Ebecryl-9260, Ebecryl- MIRAMER PU610, MIRAMER SC2010, MIRAMER SC2011 from Eisai Co., Ltd., Ebecryl-80, Ebecryl-830, Ebecryl-9970, Satomer's CN929, CN934, CN963, CN964, CN965, CN980, CN985, CN983, CN971, , MIRAMER SC2020, MIRAMER SC2021, MIRAMER SC2054, and MIRAMER SC2100. However, the present invention is not limited thereto, and the glass transition temperature is low, It may be chosen within the range of multi-functional aliphatic urethane acrylate having two or more well-known to improve the adhesion of the gold layer and the acrylic group.

The content of the 9-functional urethane acrylate oligomer is preferably 1 to 10 parts by weight, and if the content of the 9-functional urethane acrylate oligomer is less than 1 part by weight, the hardness and impact resistance of the top coat are deteriorated. If the content is more than 10 parts by weight, There is a problem that the coating film has poor resistance to discoloration and impact resistance.

The hexafunctional urethane acrylate oligomer is preferably used in an amount of 5 to 20 parts by weight, and if the hexafunctional urethane acrylate oligomer is less than 5 parts by weight, the hardness of the top coat, adhesion to the intermediate coat and curability are lowered, And if it exceeds 20 parts by weight, the impact resistance and appearance of the top coat film become poor.

Preferably, the bifunctional urethane acrylate oligomer in the photocurable UV top coat composition for the matte dry coating is provided in an amount of 5 to 20 parts by weight, and if the bifunctional urethane acrylate oligomer is less than 5 parts by weight, the impact resistance and heat resistance And when it exceeds 20 parts by weight, there arises a problem that the hardness, the aging resistance and the light fastness adhesion of the top coat film become poor.

The monofunctional acrylate monomer is an element for improving the adhesion between the top coat and the intermediate coat formed through the photocurable UV top coat composition for matte dry coating of the present invention and is prepared in 1 to 10 parts by weight If the amount of the monofunctional acrylate monomer is less than 1 part by weight, adhesion to the intermediate coating film and flexibility are lowered. If the amount of the monofunctional acrylate monomer is more than 10 parts by weight, the curing property and water resistance of the top coat film become poor, It is because it occurs.

The monofunctional acrylate monomers that can be used in the present invention include monofunctional acrylate monomers such as isobonyl (meth) acrylate, methoxypolypropylene glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, ethoxyethoxyethyl Acrylate, methoxyethylene glycol (meth) acrylate, polypropylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, epoxy diethylene glycol (meth) acrylate, butoxyethyl (Meth) acrylate, isobutyl (meth) acrylate, butyl (meth) acrylate, isopropyl (meth) acrylate and acryloylmorpholine are preferably used. It is possible to improve the adhesion between the intermediate coating films without being affected by the presence of the monofunctional acrylate monomer within the range of known monofunctional acrylate monomers so as to have a single acrylic group Can be selected.

The trifunctional acrylate monomer in the photocurable UV topcoat composition for the matte dry coating is an element for improving the curability of the coating formed through the photocurable UV topcoat composition for the matte dry coating of the present invention, 5 to 20 parts by weight, and if the amount of the trifunctional acrylate monomer is less than 5 parts by weight, the curability and hardness of the top coat are lowered. If the amount of the trifunctional acrylate monomer is more than 20 parts by weight, .

Here, the trifunctional acrylate monomer that can be used in the present invention is preferably trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and the like, but not limited thereto, Can improve the hardenability of the coating film and can be selected within the range of the known trifunctional acrylate monomers to have three acrylic groups.

The photoinitiator in the photocurable UV topcoat composition for the matte dry coating is preferably 1 to 5 parts by weight for the UV curing of the photocurable UV topcoat composition for the matte dry coating of the present invention, If the amount is less than 1 part by weight, the curability is deteriorated. If the amount is more than 5 parts by weight, there is a problem that the impact resistance and sulfur modification of the top coat film become poor.

The UV stabilizer (UVA, HALS) in the photocurable UV top coat composition for the matte dry coating is an element for improving the weatherability of the top coat formed through the photocurable UV top coat composition for the matte dry coating of the present invention. To 5 parts by weight, and if the amount of the UV stabilizer is less than 1 part by weight, chromatic aberration occurs after the accelerated weathering test, and if it exceeds 5 parts by weight, the curability of the top coat is lowered, .

A leveling additive in a photocurable UV topcoat composition for a matte dry coating is an element for improving smoothness and sprayability in a topcoat formed through a photocurable UV topcoat composition for a matte dry coating of the present invention, If the amount of the leveling additive is less than 0.1 parts by weight, the leveling and wetting of the surface of the intermediate coating film become poor. If the amount of the leveling additive is more than 1 part by weight, cratering may occur on the top coat layer Because.

The quenching agent is an element for lowering the gloss in the top coat formed through the photocurable UV top coating composition for matte dry coating of the present invention, and is preferably provided in 1 to 5 parts by weight, The degree of gloss of the back side becomes excessively high, and if it exceeds 5 parts by weight, the degree of gloss becomes too low, resulting in a problem that the hardness and appearance become poor.

Herein, the quencher may be undoped silica and synthetic polyethylene wax. However, the quencher is not limited thereto. The quencher may be used within a range of known quenching agents to appropriately lower the degree of gloss of the top coat. Can be selected.

The organic solvent in the photocurable UV topcoat composition for the matte dry coating is a component for maintaining the thickness of the topcoat formed through the photocurable UV topcoat composition for the matte dry coating of the present invention and improving the workability of the coating. , And 30 to 50 parts by weight. If the amount of the organic solvent is less than 30 parts by weight, the coating workability is deteriorated and the appearance becomes poor. If the amount of the organic solvent is more than 50 parts by weight, This is because it causes problems that can not be achieved.

Here, the organic solvent that can be used in the present invention may be an organic solvent such as acetate, ketone, alcohol, ester, aromatic or aliphatic base, But it is not limited thereto and may be selected within the range of known organic solvents.

That is, as described above, 1 to 10 parts by weight of a 9-functional urethane acrylate oligomer; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent, based on urethane acrylate synthesized with isophorone diisocyanate (IPDI), which is a non-halogenated modified, UV-curable coating composition for matte dry coating of the present invention , It is possible to form an upper coating film which can satisfy the required physical properties through surface treatment of internal automobile interior and exterior parts through appropriate adhesion with the intermediate coating and strong protection against the external environment.

2. Description of Coating Method Using Coating Composition for Matte Dry Plating Coating

Hereinafter, how the coating method using the coating composition for a matte dry coating according to the present invention is performed will be described in detail with reference to FIG.

(1) Preparation of coating for matte dry coating <S100>

In this step, the process of preparing each of the undercoating, middle and top coatings to be used in the coating process using the coating composition for the matte dry coating is performed.

Herein, the photocurable UV undercoating composition corresponding to the undercoating in the coating for a dry coating of the present invention comprises 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer as described above; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent.

In addition, the heat-drying intermediate coating composition of the present invention may be prepared by mixing 15 to 25 parts by weight of a second acrylic polyol with 40 to 60 parts by weight of a first acrylic polyol, 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent; 30 to 50 parts by weight of an epoxy silane; 30 to 50 parts by weight of an isocyanate curing agent; And 10 to 20 parts by weight of an organic solvent are provided in a ratio of 10 to 15 parts by weight of a curing agent based on 100 parts by weight of the subject.

In addition, the photocurable UV top coating composition of the present invention is an upper coating composition comprising 1 to 10 parts by weight of a 9-functional urethane acrylate oligomer as described above; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent.

The content and characteristics of the composition of each of the photocurable UV primer coating composition, the heat-drying primer coating composition, and the photocurable UV primer coating composition corresponding to the coating composition for a matting dry coating according to the present invention were previously described as " Coating composition for coating "described in the &quot; Description of coating composition for coating &quot;

(2) Underlayer formation step < S200 >

In this step, a sub-coat layer is prepared by applying the photocurable UV undercoat composition for dry-type dry-plating coating prepared in step S100 to the base layer of the substrate surface corresponding to the substrate.

Here, the material corresponding to the substrate is an automobile interior and exterior parts having a plastic material surface such as polycarbonate (PC), polycarbonate / acrylonitrile butadiene styrene (PC / ABS), acrylonitrile butadiene styrene (ABS) However, the present invention is not limited to this, and internal and external parts made of plastic are subjected to the coating operation using the paint for dry film coating of the present invention.

Specifically, first, the photocurable UV undercoat composition for matte dry coating prepared in step S100 is applied to a surface of a base layer made of a plastic material with a thickness (wet coating) of 45 to 50 μm After preheating at a temperature of 60 ° C for about 5 minutes, ultraviolet light of about 1,300 mJ / cm 2 is irradiated with a UV light to cure the undercoating layer.

The undercoat layer thus formed has a film thickness of 20 to 25 μm after being cured.

(3) Dry plating layer formation step < S300 >

In this step, dry plating is performed on the undercoating layer formed on the surface of the base layer through step S200 to form a predetermined dry plating layer.

Hereinafter, the dry plating process will be described in more detail. The dry plating process is performed by a sputtering method using a vacuum evaporator, and the type of metal included in the dry plating layer formed through the dry plating process depends on physical properties to be imparted to the coating film, It is preferable to form the dry plating layer using chromium (Cr) or aluminum (Al).

Also, the dry plating layer formed through the above process is preferably formed to a thickness of 0.1 to 0.2 μm.

(4) Intermediate layer formation step < S400 >

In this step, a heat-drying intermediate coating composition for a matte dry plating coating prepared in step S100 is applied on the dry plating layer formed in step S300 to prepare a middle coat layer.

Specifically, first, the heat-drying intermediate coating composition for matte dry plating coating prepared in step S100 is applied to the surface of the dry plating layer in a thickness of 25 to 30 μm (wet coating) Lt; 0 &gt; C for about 10 minutes to form an intermediate coat layer.

The intermediate coating layer formed thereby has a film thickness of 12 to 15 μm.

(5) Upper layer formation step < S500 >

In this step, a top coating film layer is prepared by applying a photocurable UV top coating composition for a matte dry plating coating prepared in step S100 on the intermediate plating layer formed in step S400.

In detail, first, the photocurable UV top coating composition for matte dry plating coating prepared in step S100 is applied to the surface of the intermediate coating layer in a thickness of 45 to 50 μm (wet coating) ultraviolet radiation at a temperature environment of 60 ℃ after preheating for 5 minutes by about 1,300 mJ / cm 2 irradiation by using a UV irradiator to cure the top coat layer coating film.

The undercoat layer thus formed has a film thickness of 20 to 25 μm after being cured.

In addition, it is preferable to perform the above-described processes and then complete the drying process after about 3 hours at a temperature of 80 ° C.

As a result, the coating formed through all the processes of S100 to S400 is formed by laminating the undercoating layer, the dry coating, the intermediate coating, and the top coating layer on the base layer, which is the surface of the automotive interior and exterior parts having the plastic material surface, It is possible to satisfy the physical properties required to protect the base layer from the external environment and to form a coating film which solves the problem of discharge of harmful substances.

3. Explanation of coating properties of coating compositions for matte dry coatings

The coating compositions for matte dry plating coating according to the present invention were prepared as various examples and the physical properties and the like of the coating compositions for matte dry plating coating suitable for internal and external parts were examined through various experimental methods as described below And the following experimental methods were used for the purpose of defining the properties by means obvious to those skilled in the art.

Accordingly, the components constituting the coating composition for a matte dry coating coating are prepared and tested at various mixing ratios, and the problems of the coating film formed by the conventional plating method are solved, and the surface of the automobile interior and exterior parts Which is a preferred embodiment configured to verify an appropriate compounding ratio that can satisfy the physical properties required for protection.

First, the blending forms constituting Examples 1 to 4 of the photocurable UV undercoat compositions for dry-type dry-plating coating are as shown in Table 1 below.

Photocurable UV undercoating composition Example 1 Example 2 Example 3 Example 4 Trifunctional urethane acrylate oligomer 5 10 15 12 Bifunctional urethane acrylate oligomer 15 10 5 8 Trifunctional acrylate monomers 21 21 21 16 Bifunctional acrylate monomer 10 10 10 15 Photoinitiator 5 5 5 5 Leveling additive One One One One Adhesion promoter 2 2 2 2 Organic solvent 41 41 41 41 Sum 100 100 100 100

Next, the blending forms constituting Examples 1 to 4 of the heat-drying type intermediate coating composition for non-light-sensitive dry plating coating are as shown in Table 2 below.

Heat drying type intermediate coating composition Example 1 Example 2 Example 3 Example 4 The first acrylic polyol 40 60 50 40 The second acrylic polyol 15 - 20 25 Thermoplastic acrylic resin 20 15 7 10 Adhesion promoter 3 3 3 3 Hardening accelerator 0.05 - 0.05 0.05 Leveling additive 0.2 0.2 0.2 0.2 UV stabilizer 1.5 1.5 1.5 1.5 Organic solvent 20.25 20.3 18.25 20.25 Sum 100 100 100 100

Finally, each of the blending forms constituting Examples 1 to 4 of the photocurable UV top coating composition for a non-matted dry plating coating is as shown in Table 1 below.

Photocurable UV topcoat composition Example 1 Example 2 Example 3 Example 4 9-functional urethane acrylate oligomer 3 3 3 5 Trifunctional urethane acrylate oligomer 15 11 13 9 Bifunctional urethane acrylate oligomer 15 15 13 15 Monofunctional acrylate monomer 2 2 4 2 Trifunctional acrylate monomers 8.8 8.8 10 10 Photoinitiator 3 3 3 3 UV stabilizer 1.5 1.5 1.5 1.5 Leveling additive One One One One Quencher 1.5 1.5 1.5 1.5 Organic solvent 49.2 53.2 50 52 Sum 100 100 100 100

Each of the photocurable UV primer coating composition, the heat-drying primer coating composition and the photocurable UV primer coating composition for the matte dry coating of Examples 1 to 4 prepared in formulations shown in Tables 1 to 3 was applied A predetermined coating film was formed through the above-described "coating method using a coating composition for a matte dry coating" described above, and physical properties of each coating film were measured by various experimental methods described below. Respectively.

(1) Appearance: Follow Hyundai, Kia Motors MS 600-35 (Test Method for Coating Film).

(2) Scratch resistance: The surface of a specimen prepared in accordance with JIS K 6718 or a specimen produced under the same conditions as above was scratched under the conditions shown in Table 4, and the surface state was evaluated with reference to Table 5 below.

Item Condition Load (N) 4.9 STROKE (mm) 100 Friction speed (mm / sec) 100 Scratcher 2, Number of scratches 1 time

Rating Exterior 5  Damage to the surface is not recognized. 4  Some surface damage is perceived. 3  The damage to the surface is slightly appreciated, but not to a severe degree. 2  Damage to the surface is recognized. One  The surface damage is noticeable.

(3) Adhesion: A tape peeling test is carried out in accordance with ISO 2409 and JIS K 5600-5-6. After the surface was cleaned with a soft brush and the tape (JIS Z 1522) was attached firmly, the tape was pulled out at a 90 한 angle to one side and checked with reference to Table 6 below.

Classification Exterior M-1.0 (1) No peeling of coating at the intersection of cutting
(2) Peeling along the straight line is not recognized M-2.0 (1) The peeling of the coating appears slightly at the intersection of the cuts.
(2) Peeling along the straight line is not recognized M-3.0 (1) peeling of the coating at the intersection of the cutting is 5 to 15%
(2) Peeling along a straight line is recognized
(3) One side of the snow board is not peeled off more than 50% of the coating M-4.0 (1) Being well recognized along the straight line
(2) About 5 pieces of peeled checkered snow M-5.0 (1) Highly peeled along a straight line
(2) About 20 pieces of peeled checkered snow M-6.0  (1) The checkerboard is completely peeled off

(For reference, the middle of M-1.0 and M-2.0 is M-1.5.)

(4) Moisture resistance: After leaving the test piece under the conditions shown in Table 7 below, take out the surface of the test piece, remove moisture on the surface by using an air injector, and leave it at room temperature for 1 hour to check the surface condition of the coating film. Conduct.

division Test temperature (℃) Relative humidity (% RH) Test time (h) Interior material 50 ± 2 95 ± 2 168 Exterior material 50 ± 2 95 ± 2 240

(5) Water resistance: The test specimens were immersed in tap water under the conditions shown in Table 8 below, taken out, removed with water using an air injector, left at room temperature for 1 hour to examine the surface condition of the coating, .

division Test temperature (℃) Test time (h) Exterior material 40 ± 2 240

(6) Flushing with salt water: In accordance with ISO 7253 or JIS K 5600-7-1, it was sprayed for 240 hours under the conditions shown in Table 9 below, washed with water, and the surface was removed with water using an air injector. The surface condition of the coating film is examined and immediately the above-described adhesion test is carried out.

Spraying room temperature (℃) Humidity in spray room (℃) Spray amount (ml / Hr) Salt solution concentration (w / v%) Salinity solution acidity (pH) 35 ± 2 95 0.5 - 3 5 ± 1 6.5 - 7.2

(7) Acid resistance: 0.2 ml of 0.1 N sulfuric acid or 0.1 N hydrochloric acid was dropped on the surface, then allowed to stand at room temperature for 24 hours and then washed with water. The surface of the specimen was left at room temperature for 1 hour using an air- Investigate.

(8) Alkali resistance: 0.1 N sodium hydroxide was dropped on the surface of the specimen and allowed to stand at room temperature for 24 hours. Then, the specimen was washed with water, and the surface of the specimen was removed by using an air injector. .

(9) Chemical resistance: Rinse the surface of the film 10 times with a force of about 4.0 N (0.5 kgf) using the chemicals specified in Table 10 below, and visually examine the appearance. Thereafter, it is left at room temperature for 1 hour, then left in a constant temperature chamber of 80 ± 2 ° C for 3 hours, and taken out to investigate the surface state of the coating film.

Product name Rule Gasoline Unleaded gasoline Engine oil ILSAC GF-3 or higher (for factory charging) Polish wax HMC / KMC Original or equivalent Grease MS511-07 LiG-2 Grease Glass cleaner Weakly alkaline GLASS CLEANER Ethyl alcohol Industrial ethyl alcohol

(10) Heat resistance: The test piece was left under the conditions shown in Table 11 below, and then taken out and left at room temperature for 1 hour. Then, the surface condition of the coating film was examined and immediately the above-described adhesion test was carried out.

division Test temperature (℃) Test time (h) Interior material 90 ± 2 300 Exterior material 80 ± 2 300

(11) Heat-resistant cycling test: Cycle test is carried out in the manner shown in Table 12 below, followed by taking out at room temperature for one hour. After that, the surface condition of the coating film is examined and immediately the above-described adhesion test is carried out. Further, the surface state of the coating film is irradiated every cycle.

division 1 CYCLE condition Test CYCLE Number Interior material 80 ± 2 ° C × 3h → room temperature 1h → -40 ± 2 ° C × 3h → room temperature 1h → 50 ± 2 ° C, 95 ± 2% RH × 7h → room temperature 1h 3 Exterior material 5

(12) Accelerated weathering: Investigated under the conditions described in Table 13 below with WEATHER-O-METER (ISO 105, JIS L 0843, ASTM D 6695, SAE J 1960, Xenon arc specified in SAE J 2527). However, the filter is continuously irradiated with a combination of QUARTZ (inner filter) and "TYPE S" BOROSILOCATE (outer filter). The test may also be carried out using the specimen taken from the effective side of the specimen.

Thereafter, the surface of the test piece is cleaned with a neutral detergent, the surface moisture is removed using an air injector, and the test piece is left at room temperature for 1 hour. Then, the surface condition of the test piece is examined and the adhesion test described above is immediately carried out. (However, the judgment method shall be carried out at a distance of 50 cm according to the appearance test method of JIS D 0202.)

Setting condition BLACK PNL temperature Cycle Illumination intensity 2500 KJ / m 2
[340 nm] 70 ± 2 ° C (LIGHT)
38 ± 2 ° C (DARK) 40 minutes irradiation (50 ± 5% RH)
20 minutes irradiation (surface spray)
60 min irradiation (50 ± 5% RH)
60 min unchecked (90 ± 5% RH, surface / backside spray) 0.55 0.02 W / (m 2 · nm)
[340 nm]

Test Items Example 1 Example 2 Example 3 Example 4 Exterior clear clear clear clear My Scratchy Castle clear clear clear clear Attachment M-1.0 M-1.0 M-1.0 NG M-3.0 Moisture resistance White M-2.5 M-1.5 M-1.5 M-1.5 Water resistance White M-2.5 White M-1.5 M-1.5 NG M-4.0 Salt water silent M-1.5 M-1.5 M-1.5 M-1.5 Acid resistance clear clear clear clear Alkali resistance clear clear clear clear Chemical resistance clear clear clear clear Heat resistance M-1.5 M-1.5 M-1.5 M-1.5 Heat-resistant cyclic property M-1.5 M-1.5 M-1.5 M-1.5 Accelerated weathering M-4.0 M-3.0 M-2.0 M-4.0

The results of Table 14 show that the photocurable UV coating compositions for dry-type dry plating coatings, the heat-drying intermediate coating compositions, and the coatings formed through the photocurable UV coating compositions according to Example 3, The coating composition of the present invention is most suitable among the blending ratios of each of the coating compositions for a non-light-sensitive dry plating coating of the present invention, with sufficient thickness and satisfactory required properties to sufficiently protect the surface of the automobile interior and exterior parts.

That is, as can be seen from the evaluation results of physical properties in Table 14, by satisfying the physical properties required on the surface of the component to be protected while minimizing the emission of the harmful substances, a coating film layer 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer as in Example 3; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent; 40 to 60 parts by weight of a first acrylic polyol; 15 to 25 parts by weight of a second acrylic polyol; 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent; 30 to 50 parts by weight of an epoxy silane; 30 to 50 parts by weight of an isocyanate curing agent; And 10 to 20 parts by weight of an organic solvent is provided in a proportion of 10 to 15 parts by weight of a curing agent based on 100 parts by weight of the subject, 1 to 10 parts by weight of a heat drying type intermediate coating composition and a 9-functional urethane acrylate oligomer; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent. The UV curable coating composition according to the present invention can satisfy the required properties.

Accordingly, the photocurable UV primer coating composition, the heat-drying primer coating composition, and the photocurable UV primer coating composition corresponding to the coating composition for a matte dry coating of the present invention are sequentially laminated on the surface of a part of a plastic material to be protected Layer coating, a dry coating layer, a middle coating layer, and a top coating layer to provide a surface of a plastic material such as an automobile interior and exterior material, that is, In addition to protection, the emission of harmful substances can also be solved.

The embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection is to be construed in accordance with the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

Claims (10)

5 to 20 parts by weight of a trifunctional urethane acrylate oligomer;
5 to 20 parts by weight of a bifunctional urethane acrylate oligomer;
20-30 parts by weight of a trifunctional acrylate monomer;
10 to 20 parts by weight of bifunctional acrylate monomer;
1 to 5 parts by weight of a photoinitiator;
0.1 to 1 part by weight of a leveling additive;
1 to 5 parts by weight of an adhesion promoter; And
And 30 to 50 parts by weight of an organic solvent
A photocurable UV undercoating composition for matte dry coating.
A heat drying type intermediate coating composition for a matte dry plating coating comprising a base and a curing agent,
The above-
40 to 60 parts by weight of the first acrylic polyol;
15 to 25 parts by weight of a second acrylic polyol;
5 to 20 parts by weight of a thermoplastic acrylic resin;
1 to 5 parts by weight of an adhesion promoter;
0.01 to 0.1 parts by weight of a curing accelerator;
0.2 to 1 part by weight of a leveling additive;
1 to 5 parts by weight of a UV stabilizer; And
20 to 30 parts by weight of an organic solvent,
Wherein the curing agent comprises an epoxy silane, an isocyanate curing agent, and an organic solvent,
Wherein the first acrylic polyol has a higher molecular weight and a lower glass transition temperature (Tg) than the second acrylic polyol
Heat drying type intermediate coating composition for matte dry coating.
3. The method of claim 2,
The thermally drying intermediate coating composition for matte dry coating comprises 10 to 15 parts by weight of the curing agent based on 100 parts by weight of the subject,
The curing agent,
30 to 50 parts by weight of the epoxy silane;
30 to 50 parts by weight of the isocyanate curing agent; And
And 10 to 20 parts by weight of the organic solvent
Heat drying type intermediate coating composition for matte dry coating.
3. The method of claim 2,
Wherein the first acrylic polyol has a molecular weight of 7,500 to 8,500 and a glass transition temperature (Tg) of 30 to 40 DEG C, the second acrylic polyol has a molecular weight of 4,500 to 5,500 and a glass transition temperature (Tg) of 45 to 55 DEG C Characterized in that
Heat drying type intermediate coating composition for matte dry coating.
1 to 10 parts by weight of a 9-functional urethane acrylate oligomer;
5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer;
5 to 20 parts by weight of a bifunctional urethane acrylate oligomer;
1 to 10 parts by weight of a monofunctional acrylate monomer;
5 to 20 parts by weight of a trifunctional acrylate monomer;
1 to 5 parts by weight of a photoinitiator;
1 to 5 parts by weight of a UV stabilizer;
0.1 to 1 part by weight of a leveling additive;
1 to 5 parts by weight of quenching; And
And 30 to 50 parts by weight of an organic solvent
Photocurable UV topcoat compositions for matte dry coatings.
A step of preparing a photocurable UV undercoating composition, a heat-drying intermediate coating composition and a photocurable UV topcoating composition to prepare a coating composition for a matte dry coating layer coating;
A step B for coating the surface of the base layer with the photocurable UV primer coating composition prepared in the step A to form a primer coating layer;
Performing a dry plating process on the surface of the undercoat layer formed through the step B by vacuum deposition of metal to form a dry plating layer;
Drying the thermally drying intermediate coating composition prepared in the step A to form a intermediate coating layer on the surface of the dry plating layer formed in step C; And
And an E step of coating the photocurable UV top coating composition prepared through the step A on the surface of the intermediate layer formed through the step D to form an upper coating layer,
Coating method using a coating composition for a matte dry coating.
The method according to claim 6,
The photocurable UV undercoating composition prepared through the step A may contain 5 to 20 parts by weight of a trifunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 20-30 parts by weight of a trifunctional acrylate monomer; 10 to 20 parts by weight of bifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of an adhesion promoter; And 30 to 50 parts by weight of an organic solvent
Coating method using a coating composition for a matte dry coating.
The method according to claim 6,
The thermally drying intermediate coating composition prepared through the step A comprises 10 to 15 parts by weight of a curing agent based on 100 parts by weight of the subject,
The subject matter includes 40 to 60 parts by weight of a first acrylic polyol; 15 to 25 parts by weight of a second acrylic polyol; 5 to 20 parts by weight of a thermoplastic acrylic resin; 1 to 5 parts by weight of an adhesion promoter; 0.01 to 0.1 parts by weight of a curing accelerator; 0.2 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of a UV stabilizer; And 20 to 30 parts by weight of an organic solvent,
Wherein the curing agent comprises 30 to 50 parts by weight of an epoxy silane; 30 to 50 parts by weight of an isocyanate curing agent; And 10 to 20 parts by weight of an organic solvent
Coating method using a coating composition for a matte dry coating.
9. The method of claim 8,
Wherein the first acrylic polyol has a molecular weight of 7,500 to 8,500 and a glass transition temperature (Tg) of 30 to 40 DEG C, the second acrylic polyol has a molecular weight of 4,500 to 5,500 and a glass transition temperature (Tg) of 45 to 55 DEG C Characterized in that
Coating method using a coating composition for a matte dry coating.
The method according to claim 6,
The photocurable UV top coat composition prepared through the step A may contain 1 to 10 parts by weight of a 9-functional urethane acrylate oligomer; 5 to 20 parts by weight of a hexafunctional urethane acrylate oligomer; 5 to 20 parts by weight of a bifunctional urethane acrylate oligomer; 1 to 10 parts by weight of a monofunctional acrylate monomer; 5 to 20 parts by weight of a trifunctional acrylate monomer; 1 to 5 parts by weight of a photoinitiator; 1 to 5 parts by weight of a UV stabilizer; 0.1 to 1 part by weight of a leveling additive; 1 to 5 parts by weight of quenching; And 30 to 50 parts by weight of an organic solvent
Coating method using a coating composition for a matte dry coating.
KR1020150073690A 2015-05-27 2015-05-27 Paint composition for matt dry plating and painting method for using the same KR101739072B1 (en)

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